Assures perfect alignment of disc and seat even at large flow velocities.即使在大流速下,也能够确保阀瓣和阀座的精确对准.This glass disc looks very fragile.这个玻璃盘子看起来很容易碎。The colours rotated round on a disc and were reflected onto the wall behin...
Carl slipped a disc in his back while warming up.热身时卡尔腰椎间盘不慎错位了。Getting Hollywood's latest films released on laser-disc has also helped.通过激光视盘发行好莱坞最新电影也起到了一定作用。Today's floppy disc drives are tolerant of poor qu...